Mechanism for reciprocating the tumblers of carding-machines



(No Model.)

G. DAWSON.

MECHANISM FOR REGIPROU XTING THE TUMBLERS 0F GARDING MACHINES.

N0.361-,492. Y PatentedApr. 19, 1 8817.

UNITED- STATES PATENT FFICE.

GILBRETH DAWSON, OF ROCKVILLE, CONNECTICUT.

MECHANISM FOR RECIPROCATlNG THE TUMBLERS 0F CARDlNG-MACHINES.

SPECIFICATION forming part of Letters Patent No. 361,492, dated April19, 1887.

- Application filed November 15, 1886. Serial No. 218,970. (No model.)

To all whom it may concern.-

Be it known that I, GILBRETH DAWSON, of Rockville, in the county ofTolland and State of Connecticut, have invented an Improved Mechanismfor Reciprocating the Tumblers of Carding-Machines, of which thefollowing is a specification.

My invention consists, substantially, in the combination of thefeed-roll and tumbler of a carding-machine with a driving-worm on theshaft of the feed-roll, a worm-wheel and attached eccentric, aright-angular lever one end of which engages with the eccentric and theother with a grooved collar on the shaft of the tumbler, and a standardwhich supports the worm-wheel and lever.

The object of this invention is to provide means for imparting a slowendwise-reciproeating movement to the tumbler,in order to prevent thewire on the tumbler from wearing in grooves and the necessity offrequent grinding to keep a uniform surface 011 the clothing of thetumbler,and thereby securing more perfect work and economy ofcard-clothing and labor.

All previous attempts within my knowledge to reciprocate tumblers havebeen without the "of the worm-wheel and eccentric attached;

Fig. 3, a front View of the perpendicular portion of the right-angularlever; Fig. 4, a plan of the parts shown in Fig. 1.

Corresponding letters refer to corresponding parts in the several views.

S indicates the standard,with flanges F F at each end projecting abouttwo inches; B B,-

holes for inserting bolts to secure the standard on the inside of thecarding-machine frame; D, a stud screwed into the upper flange, F, uponwhich the worm-wheel W, with eccentric E attached, revolves; P, theperpendicular portion of the right-angular lever,having lugs L L,between which eccentric E revolves; 0, an. oblong slot in lever 1,through which stud D passes, giving space for vibration of the lever P;V, a screw forming a fulcrum at the bottom of lever P; H, the horizontalportion of the right-angular lever, engaging by means of dog G with agrooved collar, C, on tumblershaft T; M, a driving-worm secured on theend of feed roll R and gearing into wormwheel W, and when thecarding-machine is in operation communicatinga slow endwisereciprocatingmotion to the tumbler T.

I am aware that it has been proposed to impart a slowendwise-reciprocating motion to a stripper operating upon the surface ofaring or other doffer by means of a worm upon the shaft of the doffer,aworm-wheel engaging said worm,and having a crank-pin which engages theslotted end of a vibrating lever, the other end of which lever is forkedto engage a grooved collar on the stripper-shaft. Such construction ofvibrating devices, and such combination therewith of doffer andstripper,I do not claim; but what I do desire to cover is the specificconstruction and combination set forth in the following claim.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

In a carding-machine,the combination of the feed-roll provided with thedriving-worm M, the tumbler having the shaft provided with the groovedcollar C, standard S, provided with flanges F F, stud D, and fulcrum V,the right-angular lever H P, provided with lugs L L and dog G, andworm-wheel W,with attached eccentric E, all constructed, secured, andoperated in the manner and for the purposes herein specified.

Rockville, Connecticut, November 12, 1886.

GILBR'ETH DAWSON.

Witnesses:

BENEZET H. BILL, J osnrn DAWSON.

